/*
 * Copyright 2024 iLogtail Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <cstdint>

#include <map>
#include <optional>
#include <string>

#include "app_config/AppConfig.h"
#include "collection_pipeline/queue/SenderQueueItem.h"
#include "common/dns/DNSCache.h"
#include "plugin/flusher/sls/SLSResponse.h"
#include "plugin/flusher/sls/StaticCredentialsProvider.h"

namespace logtail {

class SLSClientManager {
public:
    virtual ~SLSClientManager() = default;
    SLSClientManager(const SLSClientManager&) = delete;
    SLSClientManager& operator=(const SLSClientManager&) = delete;

    static SLSClientManager* GetInstance();

    virtual void Init();
    virtual void Stop() {};

    const std::string& GetUserAgent() const { return mUserAgent; }

    void GetCurrentEndpoint(const std::string& project,
                            const std::string& rawDomain,
                            std::string& domain,
                            std::string& ip,
                            bool& useIPFlag) const {
        domain = project + "." + rawDomain;
        GetCurrentEndpoint(domain, ip, useIPFlag);
    }

    void GetCurrentEndpoint(const std::string& domain, std::string& ip, bool& useIPFlag) const {
        if (AppConfig::GetInstance()->IsHostIPReplacePolicyEnabled()) {
            static DnsCache* dnsCache = DnsCache::GetInstance();
            if (dnsCache->GetIPFromDnsCache(domain, ip)) {
                useIPFlag = true;
            } else {
                useIPFlag = false;
            }
        } else {
            useIPFlag = false;
        }
    }

    virtual bool GetAccessKey(const std::string& aliuid,
                              AuthType& type,
                              std::string& accessKeyId,
                              std::string& accessKeySecret,
                              std::string& secToken,
                              std::string& errorMsg);

    virtual bool UsingHttps(const std::string& region) const { return true; }

protected:
    SLSClientManager() = default;

    virtual std::string GetRunningEnvironment();
    bool PingEndpoint(const std::string& host, const std::string& path);

    std::string mUserAgent;

private:
    std::unique_ptr<CredentialsProvider> mCredentialsProvider;

    virtual void GenerateUserAgent();

#ifdef APSARA_UNIT_TEST_MAIN
    friend class SLSClientManagerUnittest;
    friend class FlusherSLSUnittest;
#endif
};

void PreparePostLogStoreLogsRequest(const std::string& accessKeyId,
                                    const std::string& accessKeySecret,
                                    const std::string& secToken,
                                    AuthType type,
                                    const std::string& domain,
                                    const std::string& ip,
                                    bool useIP,
                                    const std::string& project,
                                    const std::string& logstore,
                                    const std::string& compressType,
                                    RawDataType dataType,
                                    const std::string& body,
                                    size_t rawSize,
                                    const std::string& shardHashKey,
                                    std::optional<uint64_t> seqId,
                                    std::string& path,
                                    std::string& query,
                                    std::map<std::string, std::string>& header);
void PreparePostHostMetricsRequest(const std::string& accessKeyId,
                                   const std::string& accessKeySecret,
                                   const std::string& secToken,
                                   AuthType type,
                                   const std::string& compressType,
                                   RawDataType dataType,
                                   const std::string& body,
                                   size_t rawSize,
                                   std::string& path,
                                   std::map<std::string, std::string>& header);
void PreparePostMetricStoreLogsRequest(const std::string& accessKeyId,
                                       const std::string& accessKeySecret,
                                       const std::string& secToken,
                                       AuthType type,
                                       const std::string& domain,
                                       const std::string& ip,
                                       bool useIP,
                                       const std::string& project,
                                       const std::string& logstore,
                                       const std::string& compressType,
                                       const std::string& body,
                                       size_t rawSize,
                                       std::string& path,
                                       std::map<std::string, std::string>& header);
void PreparePostAPMBackendRequest(const std::string& accessKeyId,
                                  const std::string& accessKeySecret,
                                  const std::string& secToken,
                                  AuthType type,
                                  const std::string& domain,
                                  const std::string& ip,
                                  bool useIP,
                                  const std::string& project,
                                  const std::string& compressType,
                                  RawDataType dataType,
                                  const std::string& body,
                                  size_t rawSize,
                                  const std::string& path,
                                  std::map<std::string, std::string>& header);
SLSResponse PostLogStoreLogs(const std::string& accessKeyId,
                             const std::string& accessKeySecret,
                             const std::string& secToken,
                             AuthType type,
                             const std::string& domain,
                             const std::string& ip,
                             bool useIP,
                             bool httpsFlag,
                             const std::string& project,
                             const std::string& logstore,
                             const std::string& compressType,
                             RawDataType dataType,
                             const std::string& body,
                             size_t rawSize,
                             const std::string& shardHashKey);
SLSResponse PostMetricStoreLogs(const std::string& accessKeyId,
                                const std::string& accessKeySecret,
                                const std::string& secToken,
                                AuthType type,
                                const std::string& domain,
                                const std::string& ip,
                                bool useIP,
                                bool httpsFlag,
                                const std::string& project,
                                const std::string& logstore,
                                const std::string& compressType,
                                const std::string& body,
                                size_t rawSize);
SLSResponse PostAPMBackendLogs(const std::string& accessKeyId,
                               const std::string& accessKeySecret,
                               const std::string& secToken,
                               AuthType type,
                               const std::string& domain,
                               const std::string& ip,
                               bool useIP,
                               bool httpsFlag,
                               const std::string& project,
                               const std::string& compressType,
                               RawDataType dataType,
                               const std::string& body,
                               size_t rawSize,
                               const std::string& subpath,
                               std::map<std::string, std::string>& header);
SLSResponse PutWebTracking(const std::string& host,
                           bool httpsFlag,
                           const std::string& logstore,
                           const std::string& compressType,
                           const std::string& body,
                           size_t rawSize);

} // namespace logtail
